Balaustion karroun

Balaustion karroun is a shrub that typically grows to 40–50 cm (16–20 in) high and about 50 cm (20 in) wide. Its leaves are egg-shaped with the narrower end towards the base, 2.5–3.7 mm (0.098–0.146 in) long and 1.4–1.6 mm (0.055–0.063 in) wide with two or three rows of oil glands each side of the midvein. The flowers are about 15 mm (0.59 in) in diameter, each flower on a pedicel 3.0–3.5 mm (0.12–0.14 in) long. The floral tube is 2.5–3.5 mm (0.098–0.138 in) long and 4–5 mm (0.16–0.20 in) wide, green and often tinged with red. The sepals are broadly egg-shaped, 2.0–2.5 mm (0.079–0.098 in) long, 4–5 mm (0.16–0.20 in) wide and reddish with a narrow whitish border. The petals are white, about 5 mm (0.20 in) long, usually with 22 to 25 stamens. Flowering occurs in October and November, and the fruit is a capsule 4.0–4.5 mm (0.16–0.18 in) long and about 6 mm (0.24 in) in diameter.

This species of Balaustion grows in sandy soils between Diemals Station and Wialki in the Avon Wheatbelt, Coolgardie and Yalgoo bioregions of Western Australia.